T38-76mm button bit for hard rock drilling -
Home Products Thread Button bits R25 Thread Button Bit T38-76mm Thread Button Drill Bit for Har Product Item：60143846275 Model Number: R22, R25, R28, R32, R38, T38, T45, T51
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Home Products Thread Button bits R25 Thread Button Bit T38-76mm Thread Button Drill Bit for Har Product Item：60143846275 Model Number: R22, R25, R28, R32, R38, T38, T45, T51
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